Finding the Fourth Proportional to 8,365.56, 12,495.32 and 7,885.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,365.56 : 12,495.32 = 7,885.72 : x
2. Step 2: Convert to fraction form
   8,365.56/12,495.32 = 7,885.72/x
3. Step 3: Cross multiply
   8,365.56x = 12,495.32 × 7,885.72
4. Step 4: Simplify right side
   8,365.56x = 98,534,594.83
5. Step 5: Solve for x
   x = 98,534,594.83/8,365.56
6. Step 6: Final answer
   x = 11,778.60